AHA ACLS Final Exam
Questions and Answers with Explanation
Most Comprehensive to Pass the Exam | 100%
Verified
Latest
Instructions: This document contains 70 multiple-choice questions organized by
ACLS topic area. Each question is followed by the correct answer and a detailed
explanation based on current AHA guidelines. Read each question carefully and
select the BEST answer before checking the explanation.
Section 1: High-Quality CPR and Basic Life Support
Question 1: What is the recommended compression-to-ventilation ratio for a single
rescuer performing CPR on an adult victim?
A. 15:1 B. 30:2
C. 30:1 D. 50:2
Correct Answer: B
Explanation: The AHA recommends a compression-to-ventilation ratio of 30:2 for a
single rescuer performing CPR on an adult. This ratio maximizes the number of chest
compressions delivered per minute while still providing adequate ventilation. When
two or more rescuers are present, a 30:2 ratio is still recommended for adults.
Question 2: What is the correct depth of chest compressions for an adult during
CPR?
A. At least 1 inch (2.5 cm) B. At least 1.5 inches (3.8 cm)
C. At least 2 inches (5 cm) D. At least 3 inches (7.5 cm)
Correct Answer: C
1
,Explanation: The AHA recommends chest compressions of at least 2 inches (5 cm)
but not greater than 2.4 inches (6 cm) in adults. This depth ensures adequate cardiac
output while minimizing the risk of injury. Compressions should be performed at a
rate of 100 to 120 per minute, allowing for full chest recoil between each
compression.
Question 3: What is the recommended rate of chest compressions during adult CPR?
A. 60 to 80 per minute B. 80 to 100 per minute
C. 100 to 120 per minute D. 120 to 140 per minute
Correct Answer: C
Explanation: The AHA guidelines specify a compression rate of 100 to 120
compressions per minute for adult CPR. Rates below 100 may not generate adequate
perfusion, while rates above 120 can compromise chest recoil and decrease cardiac
output. Rescuers should aim for the middle of this range for optimal performance.
Question 4: Which of the following is the MOST important indicator of high-quality
CPR?
A. Giving ventilations at the correct B. Minimizing interruptions in chest
interval compressions
C. Placing the hands in the correct D. Using the correct compression-to-
position on the chest ventilation ratio
Correct Answer: B
Explanation: Minimizing interruptions in chest compressions is the most critical
indicator of high-quality CPR. The AHA emphasizes maximizing the chest
compression fraction (the proportion of time during a cardiac arrest event when chest
compressions are being performed). Pre-shock and post-shock pauses should be
minimized to less than 10 seconds whenever possible.
Question 5: After initiating CPR, when should the first rhythm analysis be
performed?
A. After 1 minute of CPR B. After 2 minutes of CPR
C. After 5 cycles of CPR (about 2 D. Immediately after the first
minutes) ventilation
2
, Correct Answer: C
Explanation: The first rhythm analysis should be performed after 5 cycles of CPR,
which is approximately 2 minutes. Each cycle consists of 30 compressions and 2
ventilations (30:2 ratio). This approach ensures that the patient receives adequate
circulation before attempting defibrillation, particularly when the downtime before
EMS arrival is unknown.
Question 6: What is the proper hand placement for chest compressions on an adult?
A. Over the xiphoid process B. Over the lower half of the sternum
C. Over the upper half of the sternum D. Over the left side of the chest
Correct Answer: B
Explanation: For adult CPR, the heel of one hand should be placed on the lower half
of the sternum (breastbone), with the other hand on top. The hands should be
positioned on the center of the chest at the nipple line. This placement ensures
effective compression of the heart between the sternum and the spine.
Question 7: What is the maximum interval for interrupting chest compressions
during CPR?
A. 5 seconds B. 10 seconds
C. 15 seconds D. 20 seconds
Correct Answer: B
Explanation: Interruptions in chest compressions should be minimized and should
not exceed 10 seconds. Prolonged interruptions significantly decrease coronary
perfusion pressure and reduce the chances of successful resuscitation. All activities
such as rhythm analysis, defibrillation, and airway management should be performed
efficiently to minimize pauses.
Question 8: Which of the following BEST describes the purpose of allowing full
chest recoil between compressions?
A. It allows the rescuer to rest briefly B. It enables the heart to refill with
blood
3
Questions and Answers with Explanation
Most Comprehensive to Pass the Exam | 100%
Verified
Latest
Instructions: This document contains 70 multiple-choice questions organized by
ACLS topic area. Each question is followed by the correct answer and a detailed
explanation based on current AHA guidelines. Read each question carefully and
select the BEST answer before checking the explanation.
Section 1: High-Quality CPR and Basic Life Support
Question 1: What is the recommended compression-to-ventilation ratio for a single
rescuer performing CPR on an adult victim?
A. 15:1 B. 30:2
C. 30:1 D. 50:2
Correct Answer: B
Explanation: The AHA recommends a compression-to-ventilation ratio of 30:2 for a
single rescuer performing CPR on an adult. This ratio maximizes the number of chest
compressions delivered per minute while still providing adequate ventilation. When
two or more rescuers are present, a 30:2 ratio is still recommended for adults.
Question 2: What is the correct depth of chest compressions for an adult during
CPR?
A. At least 1 inch (2.5 cm) B. At least 1.5 inches (3.8 cm)
C. At least 2 inches (5 cm) D. At least 3 inches (7.5 cm)
Correct Answer: C
1
,Explanation: The AHA recommends chest compressions of at least 2 inches (5 cm)
but not greater than 2.4 inches (6 cm) in adults. This depth ensures adequate cardiac
output while minimizing the risk of injury. Compressions should be performed at a
rate of 100 to 120 per minute, allowing for full chest recoil between each
compression.
Question 3: What is the recommended rate of chest compressions during adult CPR?
A. 60 to 80 per minute B. 80 to 100 per minute
C. 100 to 120 per minute D. 120 to 140 per minute
Correct Answer: C
Explanation: The AHA guidelines specify a compression rate of 100 to 120
compressions per minute for adult CPR. Rates below 100 may not generate adequate
perfusion, while rates above 120 can compromise chest recoil and decrease cardiac
output. Rescuers should aim for the middle of this range for optimal performance.
Question 4: Which of the following is the MOST important indicator of high-quality
CPR?
A. Giving ventilations at the correct B. Minimizing interruptions in chest
interval compressions
C. Placing the hands in the correct D. Using the correct compression-to-
position on the chest ventilation ratio
Correct Answer: B
Explanation: Minimizing interruptions in chest compressions is the most critical
indicator of high-quality CPR. The AHA emphasizes maximizing the chest
compression fraction (the proportion of time during a cardiac arrest event when chest
compressions are being performed). Pre-shock and post-shock pauses should be
minimized to less than 10 seconds whenever possible.
Question 5: After initiating CPR, when should the first rhythm analysis be
performed?
A. After 1 minute of CPR B. After 2 minutes of CPR
C. After 5 cycles of CPR (about 2 D. Immediately after the first
minutes) ventilation
2
, Correct Answer: C
Explanation: The first rhythm analysis should be performed after 5 cycles of CPR,
which is approximately 2 minutes. Each cycle consists of 30 compressions and 2
ventilations (30:2 ratio). This approach ensures that the patient receives adequate
circulation before attempting defibrillation, particularly when the downtime before
EMS arrival is unknown.
Question 6: What is the proper hand placement for chest compressions on an adult?
A. Over the xiphoid process B. Over the lower half of the sternum
C. Over the upper half of the sternum D. Over the left side of the chest
Correct Answer: B
Explanation: For adult CPR, the heel of one hand should be placed on the lower half
of the sternum (breastbone), with the other hand on top. The hands should be
positioned on the center of the chest at the nipple line. This placement ensures
effective compression of the heart between the sternum and the spine.
Question 7: What is the maximum interval for interrupting chest compressions
during CPR?
A. 5 seconds B. 10 seconds
C. 15 seconds D. 20 seconds
Correct Answer: B
Explanation: Interruptions in chest compressions should be minimized and should
not exceed 10 seconds. Prolonged interruptions significantly decrease coronary
perfusion pressure and reduce the chances of successful resuscitation. All activities
such as rhythm analysis, defibrillation, and airway management should be performed
efficiently to minimize pauses.
Question 8: Which of the following BEST describes the purpose of allowing full
chest recoil between compressions?
A. It allows the rescuer to rest briefly B. It enables the heart to refill with
blood
3
